diff --git a/Gemfile b/Gemfile
index e017c3b..b577cb5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -33,7 +33,7 @@ gem 'turbolinks', '~> 5'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 2.5'
 # Use Redis adapter to run Action Cable in production
-gem 'redis', '~> 3.0'
+gem 'redis', '~> 4.8'
 gem 'sidekiq'
 # Use ActiveModel has_secure_password
 # gem 'bcrypt', '~> 3.1.7'
diff --git a/Gemfile.lock b/Gemfile.lock
index 5059bf3..a87c009 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -688,8 +688,6 @@ GEM
       rdf
     racc (1.6.0)
     rack (2.2.4)
-    rack-protection (2.1.0)
-      rack
     rack-test (2.0.2)
       rack (>= 1.3)
     rails (5.2.6)
@@ -786,7 +784,7 @@ GEM
       rexml (~> 3.2)
     redic (1.5.3)
       hiredis
-    redis (3.3.5)
+    redis (4.8.0)
     redis-namespace (1.8.1)
       redis (>= 3.0.4)
     redlock (1.2.2)
@@ -888,11 +886,10 @@ GEM
       rdf-xsd (~> 3.1)
       sparql (~> 3.1)
       sxp (~> 1.1)
-    sidekiq (5.2.9)
-      connection_pool (~> 2.2, >= 2.2.2)
+    sidekiq (6.5.6)
+      connection_pool (>= 2.2.5)
       rack (~> 2.0)
-      rack-protection (>= 1.5.0)
-      redis (>= 3.3.5, < 4.2)
+      redis (>= 4.5.0, < 5)
     signet (0.16.0)
       addressable (~> 2.8)
       faraday (>= 0.17.3, < 2.0)
@@ -1032,7 +1029,7 @@ DEPENDENCIES
   puma (< 6)
   rack (>= 2.0.6)
   rails (= 5.2.6)
-  redis (~> 3.0)
+  redis (= 4.8.0)
   rsolr (>= 1.0)
   rspec-rails
   rubocop